Chemical dosing for sulfide control in Australia : An industry survey

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)6564-6574
Journal / PublicationWater Research
Volume45
Issue number19
Publication statusPublished - 1 Dec 2011
Externally publishedYes

Abstract

Controlling sulfide (H2S) production and emission in sewer systems is critical due to the corrosion and malodour problems that sulfide causes. Chemical dosing is one of the most commonly used measures to mitigate these problems. Many chemicals have been reported to be effective for sulfide control, but the extent of success varies between chemicals and is also dependent on how they are applied. This industry survey aims to summarise the current practice in Australia with the view to assist the water industry to further improve their practices and to identify new research questions. Results showed that dosing is mainly undertaken in pressure mains. Magnesium hydroxide, sodium hydroxide and nitrate are the most commonly used chemicals for sewers with low flows. In comparison, iron salts are preferentially used for sulfide control in large systems. The use of oxygen injection has declined dramatically in the past few years. Chemical dosing is mainly conducted at wet wells and pumping stations, except for oxygen, which is injected into the pipe. The dosing rates are normally linked to the control mechanisms of the chemicals and the dosing locations, with constant or profiled dosing rates usually applied. Finally, key opportunities for improvement are the use of mathematical models for the selection of chemicals and dosing locations, on-line dynamic control of the dosing rates and the development of more cost-effective chemicals for sulfide control. © 2011 Elsevier Ltd.

Research Area(s)

  • Chemical dosing, Corrosion, Sewer systems, Sulfide control

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Chemical dosing for sulfide control in Australia: An industry survey. / Ganigue, Ramon; Gutierrez, Oriol; Rootsey, Ray et al.
In: Water Research, Vol. 45, No. 19, 01.12.2011, p. 6564-6574.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review